Do collars, the big soft ones, really help keep you from moving your head? I had one for a sore neck and I seemed to be able to turn my neck from side to side more than a bit, so I was wondering if it was any good.
Cervical collars have been used for a long time for neck problems, such as whiplash or torticollis. They're also used for people whose discs in the neck, the cervical discs, are too weak to support their head or if they have fractures, and they're used after certain types of neck surgeries.
If you were wearing a neck collar and you found that you could turn your head, it could have been a sign that the collar didn't fit you properly, although only your doctor or the person who fits the collars would have been able to tell you for sure.